method_missing

# File activesupport/lib/active_support/ordered_options.rb, line 43
    def method_missing(name, *args)
      name_string = +name.to_s
      if name_string.chomp!("=")
        self[name_string] = args.first
      else
        bangs = name_string.chomp!("!")

        if bangs
          self[name_string].presence || raise(KeyError.new(":#{name_string} is blank"))
        else
          self[name_string]
        end
      end
    end